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/// \file parallel/TBB/B2b/exampleB2b.cc
/// \brief Main program of the B2b example

#include "B2bDetectorConstruction.hh"
#include "B2ActionInitialization.hh"

#include "G4Threading.hh"
#include "G4TaskRunManager.hh"

#include "G4UImanager.hh"
#include "FTFP_BERT.hh"
#include "G4StepLimiterPhysics.hh"

#include "Randomize.hh"

#include "G4VisExecutive.hh"
#include "G4UIExecutive.hh"

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int main(int argc, char** argv)
{
  // Instantiate G4UIExecutive if there are no arguments (interactive mode)
  G4UIExecutive* ui = 0;
  if(argc == 1)
  {
    ui = new G4UIExecutive(argc, argv);
  }

  // Choose the Random engine

  G4Random::setTheEngine(new CLHEP::RanecuEngine);

  auto runManager =
    G4RunManagerFactory::CreateRunManager(G4RunManagerType::TBB);

  //==== Geant4 specific stuff, from now up to END-G4 comment is copy from MT
  // example
  // Set mandatory initialization classes

  runManager->SetUserInitialization(new B2bDetectorConstruction());

  G4VModularPhysicsList* physicsList = new FTFP_BERT;
  physicsList->RegisterPhysics(new G4StepLimiterPhysics());
  runManager->SetUserInitialization(physicsList);

  // Set user action classes

  runManager->SetUserInitialization(new B2ActionInitialization());

  // Initialize G4 kernel

  runManager->Initialize();

  // Get the pointer to the User Interface manager
  G4UImanager* UImanager = G4UImanager::GetUIpointer();

  if(!ui)  // batch mode
  {
    G4String command  = "/control/execute ";
    G4String fileName = argv[1];
    UImanager->ApplyCommand(command + fileName);
  }
  else
  {
    // interactive mode : define UI session
    UImanager->ApplyCommand("/control/execute init.mac");
    if(ui->IsGUI())
      UImanager->ApplyCommand("/control/execute gui.mac");
    ui->SessionStart();
    delete ui;
  }

  delete runManager;

  return 0;
}

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